package com.shopping.interceptor;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;


import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import com.shopping.po.Admin;
import com.shopping.po.User;



public class UserInterceptor implements HandlerInterceptor {
	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws ServletException, IOException {
		String url = request.getRequestURI();
		if(url.indexOf("/login")>=0) {
			return true;
		}
		HttpSession session = request.getSession();
		User user = (User)session.getAttribute("user");
		Admin admin = (Admin)session.getAttribute("admin");
		if(user != null || admin != null) {
			return true;
		} 
		//session.setAttribute("msg1", "您还没有登录，请先登录");
		request.setAttribute("msg1", "您还没有登录，请先登录！");
		request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
		return false;
	}

	@Override
	public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
			throws Exception {
		// TODO Auto-generated method stub
		
	}

}
